Method and apparatus of transmitting and receiving activesetcomplete in wireless communication systems

ABSTRACT

A method and apparatus for transmission of ActiveSetComplete message in a wireless communication system, the method comprising generating a ActiveSetComplete message comprising a 8 bit message ID field and a 8 bit MessageSequence field, wherein the MessageSequence field indicates the MessageSequence field of the ActiveSetAssignment message whose receipt ActiveSetComplete message acknowledges and transmitting the ActiveSetComplete message over an OFDM communication link. Another embodiment of present invention relates to receiving and processing the received the ActiveSetComplete message.

CLAIM OF PRIORITY UNDER 35 U.S.C. §119

The present Application for patent claims priority to ProvisionalApplication Ser. No. 60/731,126 entitled “METHODS AND APPARATUS FORPROVIDING MOBILE BROADBAND WIRELESS LOWER MAC”, filed Oct. 27, 2005,assigned to the assignee hereof and expressly incorporated herein byreference.

BACKGROUND

1. Field

The present disclosure relates generally to wireless communications, andmore particularly to methods and apparatus for transmitting andreceiving active set information.

2. Background

Wireless communication systems have become a prevalent means by which amajority of people worldwide have come to communicate. Wirelesscommunication devices have become smaller and more powerful in order tomeet consumer needs and to improve portability and convenience. Theincrease in processing power in mobile devices such as cellulartelephones has lead to an increase in demands on wireless networktransmission systems. Such systems typically are not as easily updatedas the cellular devices that communicate there over. As mobile devicecapabilities expand, it can be difficult to maintain an older wirelessnetwork system in a manner that facilitates fully exploiting new andimproved wireless device capabilities.

Wireless communication systems generally utilize different approaches togenerate transmission resources in the form of channels. These systemsmay be code division multiplexing (CDM) systems, frequency divisionmultiplexing (FDM) systems, and time division multiplexing (TDM)systems. One commonly utilized variant of FDM is orthogonal frequencydivision multiplexing (OFDM) that effectively partitions the overallsystem bandwidth into multiple orthogonal subcarriers. These subcarriersmay also be referred to as tones, bins, and frequency channels. Eachsubcarrier can be modulated with data. With time division basedtechniques, a each subcarrier can comprise a portion of sequential timeslices or time slots. Each user may be provided with a one or more timeslot and subcarrier combinations for transmitting and receivinginformation in a defined burst period or frame. The hopping schemes maygenerally be a symbol rate hopping scheme or a block hopping scheme.

Code division based techniques typically transmit data over a number offrequencies available at any time in a range. In general, data isdigitized and spread over available bandwidth, wherein multiple userscan be overlaid on the channel and respective users can be assigned aunique sequence code. Users can transmit in the same wide-band chunk ofspectrum, wherein each user's signal is spread over the entire bandwidthby its respective unique spreading code. This technique can provide forsharing, wherein one or more users can concurrently transmit andreceive. Such sharing can be achieved through spread spectrum digitalmodulation, wherein a user's stream of bits is encoded and spread acrossa very wide channel in a pseudo-random fashion. The receiver is designedto recognize the associated unique sequence code and undo therandomization in order to collect the bits for a particular user in acoherent manner.

A typical wireless communication network (e.g., employing frequency,time, and/or code division techniques) includes one or more basestations that provide a coverage area and one or more mobile (e.g.,wireless) terminals that can transmit and receive data within thecoverage area. A typical base station can simultaneously transmitmultiple data streams for broadcast, multicast, and/or unicast services,wherein a data stream is a stream of data that can be of independentreception interest to a mobile terminal. A mobile terminal within thecoverage area of that base station can be interested in receiving one,more than one or all the data streams transmitted from the base station.Likewise, a mobile terminal can transmit data to the base station oranother mobile terminal. In these systems the bandwidth and other systemresources are assigned utilizing a scheduler.

The signals, signal formats, signal exchanges, methods, processes, andtechniques disclosed herein provide several advantages over knownapproaches. These include, for example, reduced signaling overhead,improved system throughput, increased signaling flexibility, reducedinformation processing, reduced transmission bandwidth, reduced bitprocessing, increased robustness, improved efficiency, and reducedtransmission power.

SUMMARY

The following presents a simplified summary of one or more embodimentsin order to provide a basic understanding of such embodiments. Thissummary is not an extensive overview of all contemplated embodiments,and is intended to neither identify key or critical elements of allembodiments nor delineate the scope of any or all embodiments. Its solepurpose is to present some concepts of one or more embodiments in asimplified form as a prelude to the more detailed description that ispresented later.

According to one embodiment, a method is provided for transmittingActiveSetComplete message in a wireless communication system, the methodcomprising generating a ActiveSetComplete message comprising a 8 bitmessage ID field and a 8 bit MessageSequence field, wherein theMessageSequence field indicates the MessageSequence field of theActiveSetAssignment message whose receipt ActiveSetComplete messageacknowledges; and transmitting the ActiveSetComplete message over anOFDM communication link.

According to yet another embodiment, an apparatus operable in a wirelesscommunication system is described which inclused means for generating aActiveSetComplete message comprising a 8 bit message ID field and a 8bit MessageSequence field, wherein the MessageSequence field indicatesthe MessageSequence field of the ActiveSetAssignment message whosereceipt ActiveSetComplete message acknowledges and means fortransmitting the ActiveSetComplete message over an OFDM communicationlink.

According to yet another embodiment, a computer readable medium isdescribed which comprises a set of instructions for generating aActiveSetComplete message comprising a 8 bit message ID field and a 8bit MessageSequence field, wherein the MessageSequence field indicatesthe MessageSequence field of the ActiveSetAssignment message whosereceipt ActiveSetComplete message acknowledges and a set of instructionsfor transmitting the ActiveSetComplete message over an OFDMcommunication link.

According to yet another embodiment, a method is described for receivinginformation in a wireless communication system, the method comprisingreceiving a ActiveSetComplete message comprising a 8 bit message IDfield and a 8 bit MessageSequence field, wherein the MessageSequencefield indicates the MessageSequence field of the ActiveSetAssignmentmessage whose receipt ActiveSetComplete message acknowledges andprocessing the received ActiveSetComplete message.

According to yet another embodiment, a computer readable medium isdescribed which comprises a set of instructions for receiving aActiveSetComplete message comprising a 8 bit message ID field and a 8bit MessageSequence field, wherein the MessageSequence field indicatesthe MessageSequence field of the ActiveSetAssignment message whosereceipt ActiveSetComplete message acknowledges and a set of instructionsfor processing the received ActiveSetComplete message.

According to yet another embodiment, an apparatus operable in a wirelesscommunication system is described which includes means for receiving aActiveSetComplete message comprising a 8 bit message ID field and a 8bit MessageSequence field, wherein the MessageSequence field indicatesthe MessageSequence field of the ActiveSetAssignment message whosereceipt ActiveSetComplete message acknowledges and processing thereceived ActiveSetComplete message.

To the accomplishment of the foregoing and related ends, the one or moreembodiments comprise the features hereinafter fully described andparticularly pointed out in the claims. The following description andthe annexed drawings set forth in detail certain illustrativeembodiments of the one or more embodiments. These embodiments areindicative, however, of but a few of the various ways in which theprinciples of various embodiments may be employed and the describedembodiments are intended to include all such embodiments and theirequivalents.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates embodiments of a multiple access wirelesscommunication system.

FIG. 2 illustrates embodiments of a transmitter and receiver in amultiple access wireless communication system.

FIGS. 3A and 3B illustrate embodiments of superframe structures for amultiple access wireless communication system.

FIG. 4 illustrates embodiment of a communication between an accessterminal and an access point.

FIG. 5A illustrates a flow diagram of a process used by access terminal.

FIG. 5B illustrates one or more processors for the process oftransmitting ActiveSetComplete message.

FIG. 6A illustrates a flow diagram of a process used by access point.

FIG. 6B illustrates one or more processors for the process of receivingActiveSetComplete message.

DETAILED DESCRIPTION

Various embodiments are now described with reference to the drawings,wherein like reference numerals are used to refer to like elementsthroughout. In the following description, for purposes of explanation,numerous specific details are set forth in order to provide a thoroughunderstanding of one or more embodiments. It may be evident, however,that such embodiment(s) may be practiced without these specific details.In other instances, well-known structures and devices are shown in blockdiagram form in order to facilitate describing one or more embodiments.

Referring to FIG. 1, a multiple access wireless communication systemaccording to one embodiment is illustrated. A multiple access wirelesscommunication system 100 includes multiple cells, e.g. cells 102, 104,and 106. In the embodiment of FIG. 1, each cell 102, 104, and 106 mayinclude an access point 150 that includes multiple sectors. The multiplesectors are formed by groups of antennas each responsible forcommunication with access terminals in a portion of the cell. In cell102, antenna groups 112, 114, and 116 each correspond to a differentsector. In cell 104, antenna groups 118, 120, and 122 each correspond toa different sector. In cell 106, antenna groups 124, 126, and 8 eachcorrespond to a different sector.

Each cell includes several access terminals which are in communicationwith one or more sectors of each access point. For example, accessterminals 130 and 132 are in communication base 142, access terminals134 and 136 are in communication with access point 144, and accessterminals 138 and 140 are in communication with access point 146.

Controller 130 is coupled to each of the cells 102, 104, and 106.Controller 130 may contain one or more connections to multiple networks,e.g. the Internet, other packet based networks, or circuit switchedvoice networks that provide information to, and from, the accessterminals in communication with the cells of the multiple accesswireless communication system 100. The controller 130 includes, or iscoupled with, a scheduler that schedules transmission from and to accessterminals. In other embodiments, the scheduler may reside in eachindividual cell, each sector of a cell, or a combination thereof.

As used herein, an access point may be a fixed station used forcommunicating with the terminals and may also be referred to as, andinclude some or all the functionality of, a base station, a Node B, orsome other terminology. An access terminal may also be referred to as,and include some or all the functionality of, a user equipment (UE), awireless communication device, terminal, a mobile station or some otherterminology.

It should be noted that while FIG. 1, depicts physical sectors, i.e.having different antenna groups for different sectors, other approachesmay be utilized. For example, utilizing multiple fixed “beams” that eachcover different areas of the cell in frequency space may be utilized inlieu of, or in combination with physical sectors. Such an approach isdepicted and disclosed in copending U.S. patent application Ser. No.11/260,895, entitled “Adaptive Sectorization In Cellular System.”

Referring to FIG. 2, a block diagram of an embodiment of a transmittersystem 210 and a receiver system 250 in a MIMO system 200 isillustrated. At transmitter system 210, traffic data for a number ofdata streams is provided from a data source 212 to transmit (TX) dataprocessor 214. In an embodiment, each data stream is transmitted over arespective transmit antenna. TX data processor 214 formats, codes, andinterleaves the traffic data for each data stream based on a particularcoding scheme selected for that data stream to provide coded data.

The coded data for each data stream may be multiplexed with pilot datausing OFDM, or other orthogonalization or non-orthogonalizationtechniques. The pilot data is typically a known data pattern that isprocessed in a known manner and may be used at the receiver system toestimate the channel response. The multiplexed pilot and coded data foreach data stream is then modulated (i.e., symbol mapped) based on one ormore particular modulation schemes (e.g., BPSK, QSPK, M-PSK, or M-QAM)selected for that data stream to provide modulation symbols. The datarate, coding, and modulation for each data stream may be determined byinstructions performed on provided by processor 230.

The modulation symbols for all data streams are then provided to a TXprocessor 220, which may further process the modulation symbols (e.g.,for OFDM). TX processor 220 then provides N_(T) modulation symbolstreams to N_(T) transmitters (TMTR) 222 a through 222 t. Eachtransmitter 222 receives and processes a respective symbol stream toprovide one or more analog signals, and further conditions (e.g.,amplifies, filters, and upconverts) the analog signals to provide amodulated signal suitable for transmission over the MIMO channel. N_(T)modulated signals from transmitters 222 a through 222 t are thentransmitted from N_(T) antennas 224 a through 224 t, respectively.

At receiver system 250, the transmitted modulated signals are receivedby N_(R) antennas 252 a through 252 r and the received signal from eachantenna 252 is provided to a respective receiver (RCVR) 254. Eachreceiver 254 conditions (e.g., filters, amplifies, and downconverts) arespective received signal, digitizes the conditioned signal to providesamples, and further processes the samples to provide a corresponding“received” symbol stream.

An RX data processor 260 then receives and processes the N_(R) receivedsymbol streams from N_(R) receivers 254 based on a particular receiverprocessing technique to provide N_(T) “detected” symbol streams. Theprocessing by RX data processor 260 is described in further detailbelow. Each detected symbol stream includes symbols that are estimatesof the modulation symbols transmitted for the corresponding data stream.RX data processor 260 then demodulates, deinterleaves, and decodes eachdetected symbol stream to recover the traffic data for the data stream.The processing by RX data processor 218 is complementary to thatperformed by TX processor 220 and TX data processor 214 at transmittersystem 210.

RX data processor 260 may be limited in the number of subcarriers thatit may simultaneously demodulate, e.g. 512 subcarriers or 5 MHz, andsuch a receiver should be scheduled on a single carrier. This limitationmay be a function of its FFT range, e.g. sample rates at which theprocessor 260 may operate, the memory available for FFT, or otherfunctions available for demodulation. Further, the greater the number ofsubcarriers utilized, the greater the expense of the access terminal.

The channel response estimate generated by RX processor 260 may be usedto perform space, space/time processing at the receiver, adjust powerlevels, change modulation rates or schemes, or other actions. RXprocessor 260 may further estimate the signal-to-noise-and-interferenceratios (SNRs) of the detected symbol streams, and possibly other channelcharacteristics, and provides these quantities to a processor 270. RXdata processor 260 or processor 270 may further derive an estimate ofthe “operating” SNR for the system. Processor 270 then provides channelstate information (CSI), which may comprise various types of informationregarding the communication link and/or the received data stream. Forexample, the CSI may comprise only the operating SNR. In otherembodiments, the CSI may comprise a channel quality indicator (CQI),which may be a numerical value indicative of one or more channelconditions. The CSI is then processed by a TX data processor 278,modulated by a modulator 280, conditioned by transmitters 254 a through254 r, and transmitted back to transmitter system 210.

At transmitter system 210, the modulated signals from receiver system250 are received by antennas 224, conditioned by receivers 222,demodulated by a demodulator 240, and processed by a RX data processor242 to recover the CSI reported by the receiver system. The reported CSIis then provided to processor 230 and used to (1) determine the datarates and coding and modulation schemes to be used for the data streamsand (2) generate various controls for TX data processor 214 and TXprocessor 220. Alternatively, the CSI may be utilized by processor 270to determine modulation schemes and/or coding rates for transmission,along with other information. This may then be provided to thetransmitter which uses this information, which may be quantized, toprovide later transmissions to the receiver.

Processors 230 and 270 direct the operation at the transmitter andreceiver systems, respectively. Memories 232 and 272 provide storage forprogram codes and data used by processors 230 and 270, respectively.

At the receiver, various processing techniques may be used to processthe N_(R) received signals to detect the N_(T) transmitted symbolstreams. These receiver processing techniques may be grouped into twoprimary categories (i) spatial and space-time receiver processingtechniques (which are also referred to as equalization techniques); and(ii) “successive nulling/equalization and interference cancellation”receiver processing technique (which is also referred to as “successiveinterference cancellation” or “successive cancellation” receiverprocessing technique).

While FIG. 2 discusses a MIMO system, the same system may be applied toa multi-input single-output system where multiple transmit antennas,e.g. those on a base station, transmit one or more symbol streams to asingle antenna device, e.g. a mobile station. Also, a single output tosingle input antenna system may be utilized in the same manner asdescribed with respect to FIG. 2.

Referring to FIGS. 3A and 3B, embodiments of superframe structures for amultiple access wireless communication system are illustrated. FIG. 3Aillustrates embodiments of superframe structures for a frequencydivision duplexed (FDD) multiple access wireless communication system,while FIG. 3B illustrates embodiments of superframe structures for atime division duplexed (TDD) multiple access wireless communicationsystem. The superframe preamble may be transmitted separately for eachcarrier or may span all of the carriers of the sector.

In both FIGS. 3A and 3B, the forward link transmission is divided intounits of superframes. A superframe may consist of a superframe preamblefollowed by a series of frames. In an FDD system, the reverse link andthe forward link transmission may occupy different frequency bandwidthsso that transmissions on the links do not, or for the most part do not,overlap on any frequency subcarriers. In a TDD system, N forward linkframes and M reverse link frames define the number of sequential forwardlink and reverse link frames that may be continuously transmitted priorto allowing transmission of the opposite type of frame. It should benoted that the number of N and M may be vary within a given superframeor between superframes.

In both FDD and TDD systems each superframe may comprise a superframepreamble. In certain embodiments, the superframe preamble includes apilot channel that includes pilots that may be used for channelestimation by access terminals, a broadcast channel that includesconfiguration information that the access terminal may utilize todemodulate the information contained in the forward link frame. Furtheracquisition information such as timing and other information sufficientfor an access terminal to communicate on one of the carriers and basicpower control or offset information may also be included in thesuperframe preamble. In other cases, only some of the above and/or otherinformation may be included in this superframe preamble.

As shown in FIGS. 3A and 3B, the superframe preamble is followed by asequence of frames. Each frame may consist of a same or a differentnumber of OFDM symbols, which may constitute a number of subcarriersthat may simultaneously utilized for transmission over some definedperiod. Further, each frame may operate according to a symbol ratehopping mode, where one or more non-contiguous OFDM symbols are assignedto a user on a forward link or reverse link, or a block hopping mode,where users hop within a block of OFDM symbols. The actual blocks orOFDM symbols may or may not hop between frames.

FIG. 4 illustrates communication between an access terminal (for examplethe transmitter system 250 of FIG. 2) 402 and an access point (forexample the transmitter system 210 of FIG. 2) 404 according to anembodiment. Using a communication link 406 and based upon predeterminedtiming, system conditions, or other decision criteria, the accessterminal 402 will transmit ActiveSetComplete message to the access point404. The communication link 406 may be implemented using communicationprotocols/standards such as World Interoperability for Microwave Access(WiMAX), infrared protocols such as Infrared Data Association (IrDA),short-range wireless protocols/technologies, Bluetooth® technology,ZigBee® protocol, ultra wide band (UWB) protocol, home radio frequency(HomeRF), shared wireless access protocol (SWAP), wideband technologysuch as a wireless Ethernet compatibility alliance (WECA), wirelessfidelity alliance (Wi-Fi Alliance), 802.11 network technology, publicswitched telephone network technology, public heterogeneouscommunications network technology such as the Internet, private wirelesscommunications network, land mobile radio network, code divisionmultiple access (CDMA), wideband code division multiple access (WCDMA),universal mobile telecommunications system (UMTS), advanced mobile phoneservice (AMPS), time division multiple access (TDMA), frequency divisionmultiple access (FDMA), orthogonal frequency division multiple (OFDM),orthogonal frequency division multiple access (OFDMA), orthogonalfrequency division multiple FLASH (OFDM-FLASH), global system for mobilecommunications (GSM), single carrier (1×) radio transmission technology(RTT), evolution data only (EV-DO) technology, general packet radioservice (GPRS), enhanced data GSM environment (EDGE), high speeddownlink data packet access (HSPDA), analog and digital satellitesystems, and any other technologies/protocols that may be used in atleast one of a wireless communications network and a data communicationsnetwork.

The access terminal 402 is configured to transmit the ActiveSetCompletemessage and access point 404 is configured to receive theActiveSetComplete message from the access point 404 using thecommunication link 406. The ActiveSetComplete comprises a 8 bit messageID field and a 8 bit MessageSequence field. In an embodiment theMessageSequence field indicates the MessageSequence field of theActiveSetAssignment message whose receipt the ActiveSetComplete messageacknowledges. In an embodiment, the ActiveSetComplete message may beincorporated in a data packet 412. In another embodiment, theActiveSetComplete message may not be incorporated in a data packet. TheActiveSetComplete message is sent by access terminal 402 as anacknowledgement of the receipt of ActiveSetAssignment.

The access point 404 is configured to receive data packets on thecommunication link 406, one of which may comprise the ActiveSetCompletemessage. Various methods may be used to extract the ActiveSetCompletemessage from the forward link. For example, once the access point 404has extracted the data packet 412 from one of the channels of theforward link, the access point 404 may check the header information ofthe data packet 412 to determine if the data packet 412 comprises theActiveSetComplete message. If so, then the access point 404 extracts thedesignated 8 bit message ID field and the 8 bit MessageSequence field,wherein the MessageSequence field indicates the MessageSequence field ofthe ActiveSetAssignment message whose receipt ActiveSetComplete messageacknowledges and stores the values in memory (such as memory 232 in FIG.2).

FIG. 5A illustrates a flow diagram of the process 500, according to anembodiment. The access terminal (such as access terminal 402 in FIG. 4)transmits information to access point (such as access point 404 in FIG.4) receipt of whose ActiveSetAssignment message the access terminal 402acknowledges. At 502, the ActiveSetComplete message is generated. Thegenerated ActiveSetComplete message comprises a 8 bit message ID fieldand a 8 bit MessageSequence field, wherein the MessageSequence fieldindicates the MessageSequence field of the ActiveSetAssignment messagewhose receipt ActiveSetComplete message acknowledges. At 504, theActiveSetComplete message is transmitted over an OFDM communicationlink.

FIG. 5B illustrates a processor 550 of the process of transmittingActiveSetComplete message. The processor referred to may be electronicdevices and may comprise one or more processors configured to receivethe block. A processor 552 is configured to generate anActiveSetComplete message. A processor 554 is configured to transmit theActiveSetComplete message over a communication link. The functionalityof the discrete processors 552 and 554 depicted in the figure may becombined into a single processor 556. A memory 558 is also coupled tothe processor 556.

In another embodiment, an apparatus is described which includes meansfor generating ActiveSetComplete message for transmission The meansdescribed herein may comprise one or more processors.

FIG. 6A illustrates a flow diagram of process 600, according to anotherembodiment. The access point (such as access point 404 in FIG. 4)processes information received from one or more access terminals (suchas access terminal 402 in FIG. 4). At 602, the ActiveSetComplete messageis received. In an embodiment, the received ActiveSetComplete message isstored at a designated location in memory. At 604, the receivedActiveSetComplete message is processed.

FIG. 6B illustrates a processor 650 of the process of receivingActiveSetComplete message. The processor referred to may be electronicdevices and may comprise one or more processors configured to receivethe block. A processor 652 is configured for receiving anActiveSetComplete message. In some embodiments, processor 652 may storethe received ActiveSetComplete message. A processor 654 is configuredfor processing the received ActiveSetComplete message. The functionalityof the discrete processors 652 and 654 depicted in the figure may becombined into a single processor 656. A memory 658 is also coupled tothe processor 656.

In another embodiment, an apparatus is described which includes meansfor receiving a ActiveSetComplete message comprising a 8 bit message IDfield and a 8 bit MessageSequence field, wherein the MessageSequencefield indicates the MessageSequence field of the ActiveSetAssignmentmessage whose receipt ActiveSetComplete message acknowledges. Theapparatus further includes means for processing the receivedActiveSetComplete message. The means described herein may comprise oneor more processors.

Furthermore, embodiments may be implemented by hardware, software,firmware, middleware, microcode, or any combination thereof. Whenimplemented in software, firmware, middleware or microcode, the programcode or code segments to perform the necessary tasks may be stored in amachine readable medium such as a separate storage(s) not shown. Aprocessor may perform the necessary tasks. A code segment may representa procedure, a function, a subprogram, a program, a routine, asubroutine, a module, a software package, a class, or any combination ofinstructions, data structures, or program statements. A code segment maybe coupled to another code segment or a hardware circuit by passingand/or receiving information, data, arguments, parameters, or memorycontents. Information, arguments, parameters, data, etc. may be passed,forwarded, or transmitted via any suitable means including memorysharing, message passing, token passing, network transmission, etc.

Various modifications to these embodiments will be readily apparent tothose skilled in the art, and the generic principles defined herein maybe applied to other embodiments. Thus, the description is not intendedto be limited to the embodiments shown herein but is to be accorded thewidest scope consistent with the principles and novel features disclosedherein.

1. A method of transmission of ActiveSetComplete message in a wirelesscommunication system, the method characterized in that: generating anActiveSetComplete message comprising a 8 bit message ID field and a 8bit MessageSequence field that indicates the MessageSequence field ofthe ActiveSetAssignment message whose receipt the ActiveSetCompletemessage acknowledges; and transmitting the ActiveSetComplete messageover a communication link.
 2. A computer readable medium includinginstructions stored thereon characterized in that: a set of instructionsfor generating a ActiveSetComplete message comprising a 8 bit message IDfield and a 8 bit MessageSequence field that indicates theMessageSequence field of the ActiveSetAssignment message whose receiptthe ActiveSetComplete message acknowledges; and a set of instructionsfor transmitting the ActiveSetComplete message over a communicationlink.
 3. An apparatus operable in a wireless communication system, theapparatus characterized in that: means for generating aActiveSetComplete message comprising a 8 bit message ID field and a 8bit MessageSequence field, wherein the MessageSequence field indicatesthe MessageSequence field of the ActiveSetAssignment message whosereceipt the ActiveSetComplete message acknowledges; and means fortransmitting the ActiveSetComplete message over a communication link. 4.A method of receiving information in a wireless communication system,the method comprising: receiving an ActiveSetComplete message comprisingan 8 bit message ID field and a 8 bit MessageSequence field, wherein theMessageSequence field indicates the MessageSequence field of theActiveSetAssignment message whose receipt an ActiveSetComplete messageacknowledges; and processing the received ActiveSetComplete message. 5.A computer readable medium including instructions stored thereoncharacterized in that: a set of instructions for receiving aActiveSetComplete message comprising a 8 bit message ID field and a 8bit MessageSequence field, wherein the MessageSequence field indicatesthe MessageSequence field of the ActiveSetAssignment message whosereceipt ActiveSetComplete message acknowledges; and a set of instructionfor processing the received ActiveSetComplete message.
 6. An apparatusoperable in a wireless communication system, the apparatus characterizedin that: means for receiving an ActiveSetComplete message comprising a 8bit message ID field and a 8 bit MessageSequence field, wherein theMessageSequence field indicates the MessageSequence field of theActiveSetAssignment message whose receipt the ActiveSetComplete messageacknowledges; and means for processing the received ActiveSetCompletemessage.